NASA's Solar Terrestrial Relations Observatory (STEREO) Ahead and Behind spacecraft, together with images from NASA's Solar Dynamic Observatory (SDO) satellite were used by NASA to create a complete map of the sun, including the far side of the Sun. This is the first ever 360 degree view of a star.
For more info on how NASA made this amazing map, click here:
http://www.nasa.gov/sites/default/files/515199main_stereo360-briefing.pdf
Credit: NASA/STEREO/SDO/GSFC